Komatsu 840.4
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840 FORWARDERS A faster, more versatile, and even more profitable forwarder

The Komatsu 840.4 is the latest version of our superb all-round forwarder. A combination of old and new advantages delivers even better profitability than its predecessor, whether on thinning or lighter final logging assignments. Here are the essential advantages: Crane geometry Green engine Operator environment Superior crane geometry and long reach for high productivity and reliability. Powerful, economical, and environmentally friendly Tier 3 engine with high torque and low emissions. Spacious, high-performance operator environment provides a perfect view, whether driving, loading, or...

Quick and easy servicing, such as centralized crane lubrication points. Komatsu Comfort Bogie. The new bogie delivers superb handling and excellent maneuverability on steep and soft/ wet ground.

Job satisfaction Superb ergonomics, consistently high production, and reliable operation make any shift easier and much more enjoyable. forwarder of tomorrow is here Information system MaxiForwarder, the powerful and userfriendly information system, gives you full control of everything from machine control to machine status info and production reports Large and flexible load capacity A sturdy design built for heavy tonnage ensures good load capacity. The Komatsu LoadFlex option, now with optional hydraulic height-adjustable supports, ensures greater efficiency and ease of use when loading,...

ride comfort when driving over obstacles. The superb stability when driving across side slopes is now even better. The 840.4’s ergonomic advantages are equally important. The spacious cab includes a new, remote PC display, perfect visibility, and every control is positioned close at hand. It’s truly a highperformance work environment! Not to mention the superior crane geometry for exceptionally fast and highly productive operation. Easy servicing also increases production, thanks to the minimized number of lubrication points. Another distinguishing characteristic of the 840.4 is its...

Technical specifications Wheel options, front and rear, and machine width (A) with different tires Width (mm/inches) Width (mm/inches) NB: Stated dimensions are nominal and may vary slightly. Weight from: Frame/Axles Smooth high-tensile steel frame. Sturdy geared bogie. Dampening bogie stops. Forward and rear tow points. Permanently lubricated bearings. Front axle 6WD: Rigid axle with hub gearing. Engine CTA, 6-cylinder turbo with Commonrail. Tier 66 3. Bogie lift. Front blade. Stroke volume: Hydraulic system Single circuit load sensing with variable piston pump. Wear guard under bogie...

Windshields: mm (0.6”) safety glass in rear side windows 15 and rear windshield. Heating/ventilation: Fully-automatic heating and cooling unit (ACC). Filtered intake air. Noise level: per ISO standard. As Vibrations: per ISO standard. As Miscellaneous: Windshield wiper and washer on front and roof windows. Sun blinds. Ex. misc. equipment: Radio with MP3 player interface. Air-ventilated seat. Head rest. Lunchbox heater. Cooler box. Side window wipers. Allergen filter 3 micrometer (1/10,000th inch). Roof hatch. Extra floor mats for easier cleaning. Fire extinguisher, 2 kg (4.5 lb). Bunk area...

Why a Komatsu forwarder? High productivity, low operating costs, innovative technology, excellent operator environment – these are just a few examples of the advantages that earn Komatsu forestry machines a place among the best in the world. Behind all this is a highly-focused strategy to continually build upon the advantages of owning a Komatsu forwarder. A strategy based on the following principal ideas. Your forwarder is a mobile work environment where the operator’s opportunities to perform optimally without tiring are a decisive factor for success. This is an important reference point...